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Evaluation of Acute Toxicity, Antioxidant and Antibacterial Potential of Leaves Extracts from Two Anacardiaceae’s Species: Lannea microcarpa Engl. &K. Krause and Mangifera indica L.

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Journal of Biosciences and Medicines 2022年第10期10卷 125-134页

作者： monique brigitte ouattara Jean Hubert Bationo Martin Kiendrebeogo Odile Germaine Nacoulma Laboratoire de Biochimie et Chimie Appliquées (LABIOCA) Université Joseph KI-ZERBO Unité de formation et de recherche en sciences de la vie et de la terre Département de Biochimie-Microbiologie Ouagadougou Burkina Faso

Background: Leaves of Mangifera indica L or Lannea microcarpa Engl. & K. Krause are used in traditional medicine in Burkina Faso to treat bacterial, parasitic or metabolic diseases. Objective: The aim of this study is to evaluate the acute general toxicity, antioxidant potential and antibacterial activitiy of leave’s aqueous extracts from Lannea microcarpa Engl. and K. Krause and Mangifera indica L. The use of these plants in traditional medicine motivated our choice to lead scientific studies. Methods: The aqueous decoction of the leaves is the form of use recommended by traditional healers. We used the same type of extracts for studies. Acute toxicity was studied in NMRI strain mice, with the dose of 2000 mg/kg body weight, for each plant species. The antioxidant activity is evaluated by the method of reduction of radical DPPH. The phytochemical compounds were detected with specific reagent: Alcaloids with Dragendorff’s reagent, Flavonoids with ammonia (NH4OH), Polyphenols and tannins are revelated by ferric chloride (FeCl3). Saponosides were revelated by their foaming power property. Bacterial inhibiting activity is tested by measuring the diameters’ inhibition of extracts on reference strains. Results: The aqueous extracts were not toxic at the maximum dose of 2000 mg/kg body weight, for each plant species. The extracts showed an antioxidant activity with an IC50, 20 μg/ml for Lannea microcarpa and 18 μg/ml for Mangifera indica. The extracts showed no bacterial activity on three strains of bacteria tested: Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus. The phytochemicals we have identified are for L. microcarpa: tannins and phenolics compounds, triterpenes, saponosides. We identified in M. indica’s extracts: tannins and phenolics compounds, triterpenes, saponosides and flavonoids.

关键词： Lannea microcarpa Mangifera indica Toxicity Antioxidant Activity DPPH Antibacterial Activity Phytochemical Compounds

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Phytochemical Screening and Acute Toxicity Evaluation of Leaves Extract of Two Fabaceae’s Species: <i>Sesbania pachycarpa</i>DC. and <i>Indigofera berhautiana</i>Gillett

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Journal of Biosciences and Medicines 2020年第7期8卷 28-34页

作者： monique brigitte ouattara Jean Hubert Bationo Martin Kiendrebeogo Odile Germaine Nacoulma Laboratoire de Biochimie et Chimie Appliquées (LABIOCA) Université Joseph KI-ZERBO Unité de Formation et de Recherche en Sciences de la Vie et de la Terre Département de Biochimie-Microbiologie Ouagadougou Burkina Faso

Objective: The aim of this study is to screen chemical composition and to evaluate the acute general toxicity of leaves aqueous extracts from Sesbania pachycarpa DC. (Fabaceae), used in traditional medicine in Burkina Faso to treat malaria, helminthiasis, and aqueous extracts of the leaves from Indigofera berhautiana Gillet (Fabaceae) used to treat hepatitis and typhoid fever. Methods: Aqueous decoction of leaves from Sesbania pachycarpa DC. or Indigofera berhautiana Gillett which are the form of use recommended by traditional health practitioners, were used for tests. Aqueous extracts used to evaluate the acute toxicity, were studied on mice of strain NMRI. For the toxicity study, the doses of the aqueous extracts were respectively 5 mg/kg, 50 mg/kg, 300 mg/kg and 2000 mg/kg of body weight. Phytochemical screening was done to identify the phytochemicals contained in extracts. Results: Aqueous extracts of two species: Sesbania pachycarpa DC., Indigofera berhautiana Gillet were not toxic at the maximum dose of 2000 mg/kg of body weight. Phytochemical screening, showed coumarins, flavonoids, tannins, polyphenols compounds, steroids and/or triterpenes and saponosides in the aqueous extracts of the two species. Alkaloids were identified in Sesbania pachycarpa aqueous extract.

关键词： Sesbania pachycarpa DC. Indigofera bergautiana Gillet Aqueous Extracts Acute General Toxicity NMRI Strain Phytochemicals Compounds

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